A DTI MRI will not differentiate between anxiety driven symptoms and physiological driven symptoms. It just shows the brain is struggling to work properly.

A DTI does not show damage. It is like seeing an ink spot on the driveway. It shows that there is a oil leak but does not show where that oil leak is and what caused it. It can give a general location but no specific location. Keep in mind that an MRI can only see clusters of 10,000 neurons at a time.

If anxiety exists, it should be resolved. Once it is resolved, then, you can determine if there are residual PCS symptoms. For some, their anxiety is never resolved fully so they have to learn to live with the conglomeration of physical and psychological symptoms.

It can be like working in the rain. If you are constantly annoyed by the rain, it will interrupt your work. But, use work-arounds (rain coat, etc) and one can continue to work even though it is raining. You may still be getting wet (hands, face).

An even better rain analogy is Hawaii. The locals can easily recognize the tourists. When it rains unexpectedly, they react and run for cover. The locals know the rain is usually short lived and don't even break a stride. They know that it will likely stop soon and their clothes will dry off.

The second analogy is primarily how I live my life. I can perform at a high level besides the many deep potholes in my functional abilities. I just step around them. Sometimes, I get frustrated in the short term but I can usually take a breath, step back and start again. Restarts are much better/easier than trying to fix the failure.